What is Hemodialysis? | How is Hemodialysis Done?

What is Hemodialysis? Hemodialysis is the process of cleaning the patient's blood outside of the body. Dialysis removes harmful substances from the blood when the Kidneys are not functioning properly. In hemodialysis, a machine called a dialyzer, filters wastes, salt, and fluid from the blood. To allow for easy access to the bloodstream, vascular access will be created well before the hemodialysis There are three types of Accesses Arteriovenous (AV) Fistula A surgically created connection between an artery and a vein. This is the preferred type of access because of effectiveness and safety Arteriovenous (AV) Graft If the blood vessels are too small to form in AV fistula, a path is created between an artery and vein via a graft Central Venous Catheter Used in cases of emergency hemodialysis, a catheter may be inserted into a large vein in the neck Hemodialysis Procedure Two needles are inserted through the access site and taped in place to remain secure Each needle is attached to a flexible plastic tube that connects to a Dialyzer Through one tube, the dialyzer filters the blood allowing wastes and extra fluids to pass into a cleansing fluid called Dialysate The filtered blood returns to the body through the second tube The needles are removed from the access site and a pressure dressing is applied to the site to prevent bleeding

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